How did you open it?
I've tried a 3/32" punch in the 2 holes with penetrating fluid and heat - no luck so far.
Is there a pin spanner that fits this?
I'm about to make one.
Does anyone recognize the maker of these wrenches?
I don't see a name or logo, they just say Forged Steel U.S.A.
The reverse side has the metric size.
ex. 1" says 25 m/m on reverse.